"Saa, Docchi" is a song composed, sung, and illustrated by Hinata Haruhana. The song was first published on October 17th 2010, with a Vocaloid version illustrated by 7:24 uploaded on the same day. Later, a Vocaloid Append version (previously featured in the album Kikai Shikake no Nazotoki) was uploaded on November 16th 2012. It is Hinata Haruhana's eleventh work in 2010, the previous being Daikirai. A Halloween song which asks you to make a decision; to pick trick, or treat?

The song is also featured in the game Project Diva Arcade, and the game Miku Flick 02 as one of the DLC packs in the game; Dark_Pack 01. On October 2014, "Saa, Docchi candy" was available in a Family Mart campaign; with the packaging illustrated by 7:24. In another collaboration "Trick or Miku" Saa, Docchi? is one of the badges available in the campaign.